Hey i have a 2011 Ford f150 xlt 4x4 has a 2 inch leveling kit on 35s its making a thumping or clunking noise only in 4 wheel drive when i let off the gas and slow down at about 80 kmh the front left cv axle is brand new the 4 wheel drive is working as it should two new iwes all the balljoints and tierod ends are brand new wheel bearings are good just trying to figure it out also the truck has 250000 kms
if it only happens while in 4WD mode, then you should get your transfer case looked at.
Keep in mind that on ford the front drive shaft front diff and front axles do not turn when in 2 wheel drive it is completely disconnect from wheels
ok so problem could be in any one of those components. See if you can rent one of those "chassis ear" gizmos.
Have you ever heard of a inner cv joint causing a clunking noise only when slowing down
no .... but that's not to say it couldn't happen. Especially with modified suspension and a hub locking mechanism.
Just trying to rule out the cheaper stuff before going deeper might try replacing the other cv axle and try that just think that if it was the diff or transfer case it would be there all the time no matter the speed or id atleast feel it under my seat
Obviously, I would crawl under and get my peepers on it, and check for looseness with my hands before replacing anything.
Have done that didnt feel anything lose i work on bikes and i just cant seem to find this issue
Driveshaft u joints.
Drive shaft has cv joints no u joints i was thinking that but i dont feel it right under my seat where the drive shaft is i had someone say the can feel in on the passenger side have you ever heard of an inner cv joint on the front axle clunking only when letting off the gas
You said 4 wd. What about the u joints on the rear driveshaft?
Checked the u joints on rear drive shaft feel tight has a shop check them and they said it they look good also but only doing it in 4wd